Swift 2 - Xcode 7.0 Cannot Access HTTPS site with unstrusted SSL Certificate

Question

Experts, I'm a Beginner in IOS 9 / XCODE 7 / Swift 2 Development Kit

I'm trying to create an ios app that simply route to Web Application in HTTPS protocol. Below is my code so far in ViewController.swift

import UIKit

class ViewController: UIViewController {

    @IBOutlet var myWebView: UIWebView!

    /**
     * Function to Display the Web Application initial URL
     */
    func loadAppURL(){
        let siteAddress = "https://domain:8443/path/to/page"
        let url = NSURL (string: siteAddress)
        let urlRequest = NSURLRequest(URL: url!)
        myWebView.loadRequest(urlRequest)
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        loadAppURL()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}

While Building my App it shows the below Error Message

2015-10-01 01:05:13.879 Web Page Tester[2947:31838] NSURLSession/NSURLConnection HTTP load failed (kCFStreamErrorDomainSSL, -9807)

and if i try building my app instead of "https://domain:8443/path/to/page" with "http://www.apple.com" its works fine.

I can access my web application in Safari and it asks for accepting the security risks. and i accept it and i can access my Application.

Guide me to fix my issues, Thanks in advance.

Answer 1

In Swift 3.

Step 1. Add NSURLConnectionDelegate to your viewcontroller, to overwrite methods.

class ViewController: UIViewController, NSURLConnectionDelegate {

Step 2. Override viewDidLoad

override func viewDidLoad() {
        super.viewDidLoad()

        let siteAddress = "https://mysiteaddress"
        let url = URL(string: siteAddress)
        let urlRequest = URLRequest(url: url!)
        let urlConnection:NSURLConnection = NSURLConnection(request: urlRequest, delegate: self)!
        webView.loadRequest(urlRequest)
    }

Step 3 Overwrite canAuthenticateAgainstProtectionSpace and didReceive challenge

func connection(_ connection: NSURLConnection, canAuthenticateAgainstProtectionSpace protectionSpace: URLProtectionSpace) -> Bool {
    print("\ncanAuthenticateAgainstProtectionSpace method Returning True\n")
    return true
}

func connection(_ connection: NSURLConnection, didReceive challenge: URLAuthenticationChallenge) {
    print("did autherntcationchallenge = \(challenge.protectionSpace.authenticationMethod)")

    if challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust  {
        print("\nsend credential Server Trust\n")
        let credential = URLCredential(trust: challenge.protectionSpace.serverTrust!)
        challenge.sender!.use(credential, for: challenge)

    }else if challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodHTTPBasic{
        print("send credential HTTP Basic")
        let defaultCredentials: URLCredential = URLCredential(user: "user", password: "password", persistence:URLCredential.Persistence.forSession)
        challenge.sender!.use(defaultCredentials, for: challenge)

    }else if challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodNTLM{
        print("\nsend credential NTLM\n")

    } else{
        challenge.sender!.performDefaultHandling!(for: challenge)
    }

}

Thanks Navas Basheer for the original solution! Saved me a ton of time